BatteryHatch.com — Your Small Battery Resource
Learn how to keep all your battery-powered personal tools happy while saving money! Batteries for personal electronics, and then some.


BatteryHatch logo



Searching for the smartest way to purchase small batteries?

You just found it!



No minimum order!                  Free shipping with $10 order!





How do I choose the right coin cell for my application?


CR2032 
3-volt, lithium, coin cell. Diameter: 20 mm. Thickness: 3.2 mm. Capacity: 220 mAh. For calculators, data organizers, PDAs, PC motherboards, test equipment, watches, numerous other devices.

$.86
Qty: 
CR2025 
3-volt, lithium, coin cell. Diameter: 20 mm. Thickness: 2.5 mm. Capacity: 150 mAh. For calculators, data organizers, test equipment, watches, other devices.

$1.05
Qty: 
CR2025-WR 
3-volt, lithium, 20-mm coin cell. Capacity: 150 mAh. Product is encapsulated and pre-wired to special-purpose connector. Exact replacement for CMOS battery in IBM ThinkPad 600 series.

$3.95
Qty: 
CR2016 
3-volt, lithium, coin cell. Diameter: 20 mm. Thickness: 1.6 mm. Capacity: 90 mAh. For calculators, test equipment, watches, other devices.

$1.47
Qty: 
CR1616 
3-volt, lithium, coin cell. Diameter: 16 mm. Thickness: 1.6 mm. Capacity: 55 mAh. For micro instruments, watches, other devices.

$1.67
Qty: 
CR1620 
3-volt, lithium, coin cell. Diameter: 16 mm. Thickness: 2 mm. Capacity: 75 mAh. For calculators, watches, other devices.

$1.09
Qty: 
357/SR44 
1.55-volt, Silver-oxide, button cell. Diameter: 11.6 mm. Thickness: 5.4 mm. Capacity: 190 mAh. For instruments, cameras, etc.

$1.79
Qty: 
357/MD 
1.55-volt, Silver-oxide, button cell for medical devices. Diameter: 11.6 mm. Thickness: 5.4 mm. Capacity: 190 mAh. This is the exact same product as 357/SR44. Insulin pump users: This cell is used in MiniMed 508 (and earlier) pumps and the Animas IR1000. You can find these at MiniMed's online store for about $3 each if you buy 27 or at Animas' for $2 each if you buy 12 (August, 2013), but you'll probably like our price better. We identify the cell as being for medical devices, and that is how the item will read on your printed invoice, if you order part no. 357/MD rather than 357/SR44. Order your pump batteries here, and pay with your PayFlex or MSA or HSA card, and if the card issuers ask you to justify the charge, just fax them your invoice.

$1.79
Qty: 
392/SR41 
1.55-volt, Silver-oxide, button cell. Diameter: 7.9 mm. Thickness: 3.6 mm. Capacity: 45 mAh. For calculators, watches, cameras, mini-flashlights, etc. Note: This item ships FREE, any quantity

$1.69
Qty: 
377/SR626 
1.55-volt, Silver-oxide, button cell. Diameter: 6.8 mm. Thickness: 2.6 mm. Capacity: 28 mAh. For watches, micro instruments, etc. Note: This item ships FREE, any quantity

$1.09
Qty: 
L91-2pack 
1.5-volt nominal, lithium, penlite cell. Same dimensions as standard AA cell. Capacity: 2900 mAh. If you're tired of measuring your camera's battery life in seconds, then give these a shot, because they will last two to seven times longer, depending on the camera. Also for instruments, flashlights, insulin pumps and other medical devices (if that is your need, please see item AA/MD-2pack), etc. Note: The quantity "unit" is 2 cells, so enter 1 if you want 2, 2 if you want 4, etc. (Hint: enter 2 or more, and the shipping is free!)

$5.00
Qty: 
AA/MD-2pack 
1.5-volt nominal, lithium, AA-size penlite cell for medical devices. This is the exact same product as L91. Insulin pump users: This is the cell Animas Corp. recommends for use in the IR1200, IR1250, IR2020, and One Touch Ping pumps. You could buy a 2-pack at their online store for $7 (August, 2013) but you'll probably like our price better. We identify these as being for medical devices, and that is how the item will read on your printed invoice, if you order part no. AA/MD-2pack rather than L91-2pack. Order your pump batteries here, and pay with your PayFlex or MSA or HSA card, and if the card issuers ask you to justify the charge, just fax them your invoice. Note: The quantity "unit" is 2 cells, so enter 1 if you want 2, 2 if you want 4, etc. (Hint: enter 2 or more, and the shipping is free!)

$5.00
Qty: 
AA-8pack 
Eight, top-quality, standard-brand, 1.5-volt, alkaline AA cells, at a lower price than 3 Letters'. Of course, if you're looking for a low price, they'll sell you their Big Question Mark brand. If you're like us, you probably have bought BQMs on occasion (hoping to save a few bucks) but regretted it later. Regret no more! Buy the genuine article here and save! Note: The quantity "unit" is 8 cells, so enter 1 if you want 8, 2 if you want 16, etc.

$5.03
Qty: 
AAA-8pack 
Eight, top-quality, standard-brand, 1.5-volt, alkaline AAA cells, at a lower price than 3 Letters'. Same deal as above, but in everyone's favorite smaller size. For flashlights, graphing calculators, micro-cameras, remotes, pagers, etc. Note: The quantity "unit" is 8 cells, so enter 1 if you want 8, 2 if you want 16, etc.

$5.75
Qty: 


      



A note about shipping charges

It pains us to say this, but thanks to current USPS regulations, we can no longer offer free shipping on all orders. At this time, no known U.S. freight carrier will accept lithium batteries for transport by air freight, and because most First Class mail travels by air, we cannot mail coin cells First Class, and we cannot merely absorb the cost of approved shipping methods. We pledge to continue our long-standing practice of offering you the best value for your dollar, and you can count on us to find the most economical shipping options available.

Another note: This restriction does NOT apply to alkaline or silver-oxide cells, which can be shipped First Class.






                 Choosing the right coin cell

Here's a question we hear often: What is the difference between a CR2025 and a CR2032, or between a CR2016 and a CR2025, or between a CR2016 and a CR1620? Here's another one: How do I select the right coin cell for my application?

A battery with a part number consisting of BR or CR followed by four digits is a single lithium cell in a small, disk-shaped package. Its terminals are the metallic surfaces on either side. It is called a coin cell because it somewhat resembles a coin in size and shape, although its engravings are completely devoid of artistic merit and its date marking may seem highly improbable. Also, it is rumored that coin cells tend to jam vending machines.

Actually, hardly anyone seems inclined to interpret the numbers as dates, which is just as well, because their correct interpretation is as follows:
    First two digits: Diameter in millimeters
    Last two digits: Thickness in tenths of a millimeter

Examples: a CR2032 is 20 mm in diameter and 3.2 mm thick, while a CR2016 is the same diameter (20 mm) but only half as thick (1.6 mm). A CR1620, on the other hand, is 16 mm in diameter and 2.0 mm thick. Note that these numbers should be considered nominal dimensions, as there may be very slight variations between brands in the same part number. However, in our experience, these differences are not discernible without the aid of a micrometer or a precision caliper. Every cell that we ship for a given part number will fit any standard socket or holder designed for a cell with that part number.

So what's the difference between a CR2032 and a BR2032?

Most lithium cells have a nominal terminal potential of 3 volts. Like other types of primary (i.e., non-rechargeable) cells, however, their voltage isn't perfectly uniform over time and use. Because of somewhat different composition, the BR-type cells yield more uniform voltage over most of their useful life, but near end of life, their terminal voltage falls fairly rapidly. Because of that, they are often called constant-voltage lithium cells. CR-type cells, on the other hand, exhibit a more gradual decline in voltage over most of the discharge period, and thus they may give somewhat longer service in circuits designed to tolerate a wider range of terminal voltage, and they tolerate higher continuous load currents. In addition to typically having somewhat higher rated capacities, they also tend to cost less than their BR-type relatives, which largely accounts for their greater popularity.

Here's another variation: BR-type cells whose part numbers end with the letter A (e.g., BR2032A) are high-temperature lithium cells, and they are intended for applications which may encounter extreme temperatures. Their rated operating range is -40 C to 125 C. Of course, all lithium batteries are adversely affected by high temperatures, but the A-series cells withstand heat better than other types.

We don't always have BR-type cells in stock, but when we do have them, they will be mentioned somewhere on this site. If you're looking for them (or for anything else, for that matter), please use the box below to search for the type you need.

But what's the difference between a DL2032 and a CR2032?

This one falls into the unnecessary confusion category, but that's okay — we'll answer it anyway. A DL2032 is merely a CR2032 branded by Duracell. Occasionally, we have Duracell DL2032s in stock, but we don't call them that, because most people know them as CR2032s. If you need to replace a DL2032, please just order the CR2032 instead. It's always in stock and ready to ship, and its quality is equal or higher.

What, exactly, is a CR2025-WR? How does it differ from a CR2025?

We're glad you asked. It is based on a CR2025, but it's more. It's encapsulated in an insulating wrapper, and it has a short cable and connector attached, for specific applications. Primarily, it is used as the “CMOS” battery in IBM's ThinkPad 600 series and other popular notebook computers. Note: This is not the rechargeable battery, the big battery that makes the computer useable when you can't plug it in. This is the little battery that keeps the real-time clock running even when the big battery is fully discharged or out of the computer. So, if your ThinkPad 6xx needs a clock battery, order the CR2025-WR. If you order the CR2025 instead, you'll have your work cut out for you.
              



Don't see the one you need? Search our site: